E2.4] Which of the following demands the highest computer reliability? A) ESD B) Field devices. C) DCS. D) Supervisory control E2.5] Which is a function of the supervisory computer? A) Generation and logging of the process and system alarms. B) Advanced process control. C) Emergency Shutdown. D) Data reduction and archiving E2.6) Briefly state four functions of the SCADA systems. E2.7 Briefly state four functions of the DCS systems